Continued fractions in R have a single definition and algorithms for approximating them are well known. There also exists a well known result which states that √ m, m ∈ Q, always has a periodic continued fraction representation. In Qp, the field of p-adics, however, there are competing and non-equivalent definitions of continued fractions and no single algorithm exists which always produces a p...

Collaborative studies were performed to develop a functional assay for fish-killing activity produced by Pfiesteria piscicida. Eight cell lines were used to screen organic fractions and residual water fraction by using a 3-[4, 5-dimethylthiazol-(2-4)]-diphenyltetrazolium bromide cytotoxicity assay. Diethyl ether and a residual water fraction were cytotoxic to several cell lines including rat pi...

to evaluate the relationships between soil inorganic phosphorus p (pi) fractions, the soil p test and plant parameters such as plant p uptake, dry matter yield, tissue p concentra-tion and relative yield, glasshouse experiments and chemical analyses were conducted on 13 calcareous soils from six agricultural and seven adjacent bushland (virgin soil) sites. four rates of p (0, 15, 30, 60 mg/kg s...

This study examined the concentration of organic and inorganic phosphorus in surface soils of a Bouteloua gracilis-Bouteloua eriopoda grassland, and a Larrea tridentata shrubland, in the northern Chihuahuan Desert, New Mexico, USA. In this desert where the grassland vegetation has a uniform spatial distribution and individual shrubs have a patchy spatial distribution across the landscape, veget...

Phosphorus (P) fractionation is the validation of nature, solubility and relative bioavailability P. A sequential P extraction was used to determine distribution plant-available fractions in soils. The relationships these soil properties foliar contents were also determined. Results this study showed substantial differences among orchards. Higher amounts organic matter (SOM), cation exchange ca...

The indiscriminate use of chemical fertilizers can deteriorate soil, grain, and environmental quality; still, these be restored if integrated nutrient management options with inclusion legumes in the cropping system are adopted. A long-term (19 year) rice-wheat experiment was examined to find out best practices (BNMP) through recommended dose (RDF), plant nutrition (IPNS), soil test crop respon...